What are the differences in the Sony DSLR Lens Range?

M

Matt D

New member
I have a brochure from the Sony DSLR I bought, just with some of the lenses available in the Sony range. There are:
G Lens
Carl Zeiss Lens
Alpha Lens
DT Lens

It's pretty obvious what the G Lens are used for, but I didn't know what the purpose of the DT Lens were? As in are they specially made for portrait use etc.?
So I just wasn't sure what was the purpose of this other range of DT lenses - the Carl Zeiss and Alpha lens are fairly straightforward in understanding what they are, but I wasn't sure what made the DT lenses different?

Thanks
 
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